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Finding the Fourth Proportional to 148,850.90, 223,017.15 and 128,114.90

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Solution

The fourth proportional to 148,850.90, 223,017.15 and 128,114.90 is: 191,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,850.90 : 223,017.15 = 128,114.90 : x
  2. Step 2: Convert to fraction form
    148,850.90/223,017.15 = 128,114.90/x
  3. Step 3: Cross multiply
    148,850.90x = 223,017.15 × 128,114.90
  4. Step 4: Simplify right side
    148,850.90x = 28,571,819,870.54
  5. Step 5: Solve for x
    x = 28,571,819,870.54/148,850.90
  6. Step 6: Final answer
    x = 191,949.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.